however. -115B
GE PROPRIETARY INFORMATION
71-00-05
Page 1-3
Sep 05
. re-exported.S.
This product is considered GE Aircraft Engines technical data information and therefore is exported under U. The foregoing is subject
to any rights the U.S. For authorized maintenance practices and specifications. Government
Export License Regulations.
Copyright 2005 GE Aircraft Engines
EFFECTIVITY
B777/GE90-110B. diverted. Government. Government may have acquired as such information. If consent is given for
reproduction in whole or in part. or it's product may not
be resold. in whole or in part.S. trans-shipped. This information is accurate at the time of compilation.
Proprietary Information Notice
The information contained in this document is disclosed in confidence.GE AIRCRAFT ENGINES
GE90
TRAINING MANUAL
This publication is for TRAINING PURPOSES ONLY. It is issued to the user under specific conditions that. It is the property of GE and shall not be used (except
for evaluation). no
update service will be furnished to maintain accuracy. or used in any other country without prior written approval of the
U. disclosed to others. transferred. or reproduced without the expressed written consent of GE. this notice shall appear on any such reproduction. consult the
pertinent Maintenance Publication. the contained data.

The fan stator module
. the engine is designed around the principle
of the fan stator module removal into two parts:
.GE AIRCRAFT ENGINES
GE90
TRAINING MANUAL
FAN STATOR MODULE REMOVAL/INSTALLATION
INTRODUCTION
The GE90 is designed for high overall system reliability
and maintainability based on the relevant experience on
different successful programs.
Due to its size. -115B
GE PROPRIETARY INFORMATION
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Sep 05
.The engine propulsor
This removal increases the engine transportability and
reduces the number and the cost of the spare parts by
reusing some engine hardware.
EFFECTIVITY
B777/GE90-110B.

Two aft cradle to engine support adapters and two
forward cradle to engine support adapters allow for the
support of the propulsor or engine.
EFFECTIVITY
B777/GE90-110B.
.the base.
.
The hydraulic jacks are controlled from a central hydraulic
hand pump located on the left side of the stand.
It is made up of two main parts:
.GE AIRCRAFT ENGINES
GE90
TRAINING MANUAL
9C6025 INSTALLATION AND SHIPPING STAND
The 9C6025 stand allows:
.the cradle
.
Forklift tubes are positioned within the base and usable
from either side of the stand. -115B
GE PROPRIETARY INFORMATION
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Page 2-4
Sep 05
.
There are hydraulic jacks near each wheel of the stand.the removal and installation of the engine to the
airplane wing.the removal and installation of the fan stator case
from the propulsor.
There is a hand operated hyraulic pump attached to the
base for raising and lowering of the cradle on the base.the air and ground transportation of the propulsor.

EFFECTIVITY
B777/GE90-110B. All four wheels of the side frames are
individually adjustable up and down.
The 9C6030 has two Aft Adapters. two 94B Forward Adapter Plates and two Side
Frames.
To align the fan stator module to the propulsor. all
adjustments are made to the fan stator module using the
9C6030 fan stator module transfer system. two Forward
Adapters. The 9C6030 transfer system is
attached to the GE90 fan stator module and is used to
remove or intall the fan stator module onto the propulsor.GE AIRCRAFT ENGINES
GE90
TRAINING MANUAL
9C6030 FAN STATOR MODULE TRANSFER SYSTEM
The 9C6030 fan stator module transfer system supports
the fan stator module. -115B
GE PROPRIETARY INFORMATION
71-00-05
Page 2-6
Sep 05
.

Forklift tubes are positioned within the stand and usable
from the front side of the stand.GE AIRCRAFT ENGINES
GE90
TRAINING MANUAL
9C6014 PERSONNEL STAND
The 9C6014 personnel stand allows for access to the fan
stator module forward flange bolts.
The stand is made up of three parts and is placed into the
fan stator module after the fan blades have been
removed. -115B
GE PROPRIETARY INFORMATION
71-00-05
Page 2-12
Sep 05
.
EFFECTIVITY
B777/GE90-110B. the 9C6014 personnel stand
provide steps for the mechanic to reach the upper bolts of
the fan stator module forward bolt flange. When assembled.

71-00-05
Page 3-2
Sep 05
.install the drain and service module assembly
.
Complete the engine preparation after the fan stator
module as been installed on the engine propulsor.GE AIRCRAFT ENGINES
GE90
TRAINING MANUAL
ENGINE PREPARATION FOR FAN STATOR MODULE
REMOVAL/INSTALLATION
Prepare the engine for removal of the fan stator module
from the engine propulsor.install the upper and lower bifurcation bridges
.install the splitter fairing and booster anti-ice tubes
.disconnect the EAI duct
.remove the drain and service module assembly
.install the fan blade platforms
.remove the upper and lower bifurcation bridges
.
Note: The steps of engine preparation can be done with
the engine on wing or in the installation/shipping stand.install the bleed air deflector panels
.connect the electrical harnesses to the fan stator
module assembly
.install the lower hydraulic bifurcation assembly
.connect the seal pressurization and oil tank vent tube
.install the acoustic panels
.remove the upper and lower fillet fairings
.remove the air bleed defector panels
. -115B
GE PROPRIETARY INFORMATION
.drain the oil from the engine.
Note: The steps of engine preparation can be done with
the engine in the installation/shipping stand or on wing.disconnect the seal pressurization and oil tank vent
tube
.remove the lower hydraulic bifurcation assembly
.remove the fan blades and mounting hardware
.install the upper and lower fillet fairings
.remove the spinner and support ring
. IDG and Backup
Generator
.install the support ring and spinner
.install the fan blades and mounting hardware
.remove the acoustic panels
.remove the fan blade platforms
.
Following are the main steps of engine preparation for the
engine fan stator removal:
Following are the main steps of engine preparation after
the engine fan stator module installation:
.remove the booster anti-ice tubes and splitter fairing
EFFECTIVITY
B777/GE90-110B.remove the blank off panels
.fill the oil of the engine.connect the EAI duct
.install the blank off panels
. IDG and Backup Generator.disconnect the electrical harnesses from the fan stator
assembly
.

1 gallon or 4 quarts low.
.the 4/4 mark means that 1 gallon (4 quarts) needs to
be added
.
EFFECTIVITY
B777/GE90-110B.
The oil tank is drained by using the two quick disconnect
ports in the oil supply and scavenge return lines and a
bucket.GE AIRCRAFT ENGINES
GE90
TRAINING MANUAL
ENGINE OIL (CHANGE) SERVICING
WARNING: DO NOT LET HOT OIL GET ON YOU.
Note: There is no need to service the oil tank unless it is
at or below the 4/4 mark . HOT
OIL CAN BURN YOU.
The manual fill port cap has a dipstick attached to it.
The drain ports are located in the oil supply and scavenge
returns lines at the 6:00 position off the fan case.the 5/4 mark means that 1. This
dipstick indicated the amount of oil that needs to be added
to bring the oil level to full.
The oil tank dipstick reads in gallons:
Oil Tank Draining:
.the 1/2 mark means that 1/2 gallon (2 quarts) needs to
be added. -115B
GE PROPRIETARY INFORMATION
71-00-05
12-22-01
Page 3-4
Sep 05
.connect locally manufactured drain tube to the drain
ports and catch the oil (11 gallons or 42 liters) in a
container.
Oil Tank Servicing:
The oil tank is manually filled by hand pouring quart cans of
oil into the oil tank at the manual fill port.
.the 3/4 mark means that 3/4 gallon (3 quarts) needs to
be added
.25 gallon (5 quarts) needs
to be added.

aft
face of the accessory gearbox.pressure servicing the IDG through the remote service
lines.
EFFECTIVITY
B777/GE90-110B.removing the IDG case drain plug and catching the oil
(1.GE AIRCRAFT ENGINES
GE90
TRAINING MANUAL
INTEGRATED DRIVE GENERATOR .5 gallons or 6 liters) in a container. -115B
GE PROPRIETARY INFORMATION
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12-22-07
Page 3-6
Sep 05
.
The generator remote oil service lines are attached to the
aft side of the engine drain lines.installing the IDG case drain plug
The Integrated Drive Generator is located on the left.
. HOT
OIL CAN BURN YOU.
.
The IDG oil is serviced by:
.attaching a hose to the overfill remote service line to
relieve any pressure in the system.
IDG Oil Servicing:
.SERVICING (OIL
CHANGE)
WARNING: DO NOT LET HOT OIL GET ON YOU.

forward face
of the accessory gearbox.
EFFECTIVITY
B777/GE90-110B.
Backup Generator Oil Draining:
.installing the Backup Generator case drain plug
.
The Backup Generator is located on the left.remove the Backup Generator case drain plug and
catching the oil (1 gallon or 3. -115B
GE PROPRIETARY INFORMATION
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12-22-09
Page 3-8
Sep 05
.
.
The generator remote oil service lines are attached to the
aft side of the engine drain lines.attach a hose to the overfill remote service line to
relieve any pressure in the system.
The Backup Generator oil is serviced by:
.GE AIRCRAFT ENGINES
GE90
TRAINING MANUAL
BACKUP GENERATOR . HOT
OIL CAN BURN YOU.SERVICING (OIL CHANGE)
WARNING: DO NOT LET HOT OIL GET ON YOU.pressure servicing the Backup Generator through the
remote service lines.7 liters) in a container.

connect the eight pressure air tubes in front of the
lower bifurcation fire seal and at 12:00 position at
the upper end of the service module.GE AIRCRAFT ENGINES
GE90
TRAINING MANUAL
LOWER HYDRAULIC BIFURCATION ASSEMBLY
REMOVAL/INSTALLATION
Lower Hydraulic Bifurcation Assembly Removal:
.connect the oil tank and oil return tubes in front of the
lower bifurcation fire seal and at 12:00 position at
the upper end of the service module
.
Lower Hydraulic Bifurcation Assembly Installation:
.
EFFECTIVITY
B777/GE90-110B.disconnect the eight pressure air tubes in front of the
lower bifurcation fire seal and at 12:00 position at
the upper end of the service module
.install the lower hydraulic bifurcation assembly
. -115B
GE PROPRIETARY INFORMATION
71-00-05
Page 3-20
Sep 05
.remove the lower hydraulic bifurcation assembly.disconnect the oil tank and oil return tubes in front of
the lower bifurcation fire seal and at 12:00 position
at the upper end of the service module
.

To help during installation. -115B
GE PROPRIETARY INFORMATION
71-00-05
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Sep 05
.GE AIRCRAFT ENGINES
GE90
TRAINING MANUAL
BLANK OFF PANELS REMOVAL/INSTALLATION
The eight Blank Off Panels are located between the bleed
air deflector panels on the inner cowl support.
The blank off panels are removed to get access to the fan
stator module aft mount bolts. the blank off panel installation
positions are etched into the panels (Example .
Blank Off Panel Removal:
.remove the screws from the blank off panels and
remove the panels
Blank Off Panel Installation:
.POS 1&5).
The panels are numbered from aft looking forward starting
at 12:00 o'clock of the engine.install the blank off panels by position number and
install the screws.
EFFECTIVITY
B777/GE90-110B.

The panels are numbered from aft looking
forward starting at 12:00 o'clock of the engine. -115B
GE PROPRIETARY INFORMATION
71-00-05
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Sep 05
.install the bleed air deflector panels and install the
screws.GE AIRCRAFT ENGINES
GE90
TRAINING MANUAL
BLEED AIR DEFLECTOR PANELS REMOVAL/
INSTALLATION
The ten Bleed Air Deflector Panels are located around the
inner cowl support. the bleed air deflector panel
installation positions are etched into the panels (Example POS 5&10).
Bleed Air Deflector Panel Installation:
.
Bleed Air Deflector Panel Removal:
.
The Bleed Air Deflector Panels are removed to get access
to the fan stator module aft mount bolts.
To help during installation.
EFFECTIVITY
B777/GE90-110B.remove the screws from the bleed air deflector panels
and remove the panels.

.Align the "1" of the spinner with number "1" on the
support ring to align the offset bolt holes.Remove the 22 bolts and the support ring. These number
"1"s are aligned with the number "1"s marked on either
side of the fan disk number 1 blade slot.
NOTE: The 44 radial screws on the outer diameter of
the spinner .
Note: The number "1" is marked on the backside and front
side of two bolt flanges of the support ring.Remove the 22 axial mount bolts on the spinner and
remove the spinner.GE AIRCRAFT ENGINES
GE90
TRAINING MANUAL
FAN BLADE REMOVAL / INSTALLATION
The spinner is attached to the front of the fan disk.
EFFECTIVITY
B777/GE90-110B.Align the support ring number "1"s with the number
"1"s on the fan disk.and on either side of each axial mount bolt are fan assembly balance screws.
To remove the spinner do the following:
. Alignment of the number "1"s
will align the offset bolt holes of the support ring and fan
disk. The offset bolt
hole is marked with an "O". -115B
GE PROPRIETARY INFORMATION
71-00-05
72-21-01
Page 3-40
Sep 05
.
NOTE: The number "1" is marked on the front of the
support ring and on the spinner.
.
To install the spinners do the following:
. Install the 22 bolts.

Remove the fan blade from the fan disk slot.
.
Note: The fan blade platforms and fan blades are balance
critical.Remove the retainer from the fan disk slot.
NOTE: The blades are numbered counter clockwise when
you are facing them.
Note: Do not remove the fan disk shims. The platforms are secured in place by
the spinner.
. fan blades and other
hardware.
.Remove the blade platform on either side of the
blade to be removed.Remove the spacer using the fan blade spacer
removal tool (9C1202) or hydraulic removal tool
(9C3001)
. Record their original position.
Fan Blade Spacer Removal:
.
NOTE: A rubber seal around the platform creates a tight fit
between the blades holding the platform in place during the
assembly process. The number "1" is engraved on the
forward face of the fan disk.move the slide hammer aft and forward to remove the
fan blade spacer.Turn the fan assembly counterclockwise to put the first
fan blade to be removed at the 6 o'clock position.
. Before removal use a felt tip pen and tape to mark
the location of the fan blade platforms.
to be sure to install them at the same location.GE AIRCRAFT ENGINES
GE90
TRAINING MANUAL
FAN BLADE REMOVAL
The twenty-two fan blades are located in the forward end of
the engine.
. on either side of the number
one blade slot.
EFFECTIVITY
B777/GE90-110B.Place the detail pin in the bolt hole of the fan blade
spacer
.Remove the bolt securing the spacer and the
retainer together.
.Number the blades and platforms before removal.Remove the dovetail key from the fan disk slot.
The fan blades must be removed to allow for fan stator
module separation. -115B
GE PROPRIETARY INFORMATION
71-00-05
72-21-02
Page 3-42
Sep 05
.
.

.
.
.
.
NOTE: A rubber seal around the platform creates a tight fit
between the blades holding the platform in place during the
assembly process.
.
Note: Be sure to clean and lubricate the fan blades and fan
disk before installation.Install the blade retainer into the fan disk retainer
slot.Insert the fan blade spacer between the fan blade
and the dovetail key. -115B
GE PROPRIETARY INFORMATION
71-00-05
72-21-02
Page 3-48
Sep 05
.Install the blade platforms on either side of the fan
blade.Turn the fan assembly counterclockwise to put the
fan blade slot for the fan blade to be installed at the
6 o'clock position.Hit the spacer with a plastic mallet until fully
installed or use the hydraulic installation tool
(9C3001).
.
.GE AIRCRAFT ENGINES
GE90
TRAINING MANUAL
FAN BLADE INSTALLATION
Install the fan blades and fan blade platforms at their
original locations (for balancing purposes). The platforms are secured in place by
the spinner. Insert the rear of the platform under the
booster flange. then push the forward part of the
platform toward the fan disk.Install the dovetail key into the fan disk blade slot.
.
EFFECTIVITY
B777/GE90-110B.Install the bolt that holds the retainer and the spacer
together.Install the fan blade into the fan disk blade slot.

LOW PRESSURE COMPRESSOR (LPCAI) ANTI-ICE
TUBES
GE SB 75-003 deleted the Low pressure compressor antiice system and was introduced in production on engines
900-129 and up.
Reason for service bulletin introduction:
Engine tests indicate that the LPC Anti-Ice system is not
required.

LPC Anti-IceTube Installation:
- connect the two bolts that attach the tube to the
booster splitter fairing at the forward end, the nut at
the aft end and the clamp.

For those engines that still have the LPC Anti-Ice Tubes
they are located at four locations around the booster
module. The acoustic panels much be removed to get
access to them.
The LPC Anti-Ice Tubes delivers seventh stage HPC air to
the booster splitter fairing. The tubes must be removed to
allow for fan stator removal.
LPC Anti-IceTube Removal:
- disconnect the two bolts that attach the tube to the
booster splitter fairing at the forward end, the nut at
the aft end and the clamp.

Note: If using9C6000 Installation and Shipping Stand
make sure that the fan hub frame mount support adapters
are installed first. can be done with the engine in
the 9C6000 or 9C6025 Installation and Shipping Stands. using the
9C6030 Transfer System.
Fan Stator Module Installation:
.
.
The fan stator module must be removed to perform a
normal engine change.attach the left and right 9C6030 Aft Adapters to the
aft fan case ground handling mounts
.
EFFECTIVITY
B777/GE90-110B. -115B
GE PROPRIETARY INFORMATION
Fan Stator Module Removal:
.attach the right 9C6030 Side Frame to the right
Forward Adapter and Aft Adapter.
.
The fan stator module removal/installation.install the 9C1277 guide pin set into the fan stator
module aft flange
71-00-05
Page 4-2
Sep 05
.attach the left and right 9C6030P01 Forward
Adapters to the fan case flange. The fan stator module can be
removed and installed with or without the inlet cowl
installed.attach the left 9C6030 Side Frame to the left
Forward Adapter and Aft Adapter.GE AIRCRAFT ENGINES
GE90
TRAINING MANUAL
FAN STATOR MODULE REMOVAL/INSTALLATION 9C6030 TRANSFER SYSTEM
The Fan Stator Module is located on the front of the
engine.

by hand.move the 9C6030 and fan stator.
Note: Use the 9C6030 Side Frame wheels to adjust the
height of the fan module and move the 9C6030 side to
side.
.)
Fan Stator Module Removal:
Fan Stator Module Installation:
Maintenance tip:
To prevent the engine from shifting and causing damage
or injury during fan stator removal do the following:
Note: Clean. the shank of the bolts
and to the bearing surface of the integral washers
on the bolts.install the bolts to the aft flange of the fan stator
module at the fan hub frame.remove the bolts from the forward flange of the fan
stator module at the fan hub frame.adjust the left 9C6030 side frame forward wheel
handle "down" until the wheel is off the ground.
.GE AIRCRAFT ENGINES
GE90
TRAINING MANUAL
FAN STATOR MODULE REMOVAL/INSTALLATION 9C6030 TRANSFER SYSTEM (CONT. away
from the propulsor.
71-00-05
Page 4-8
Sep 05
. lubricate and torque fan stator module
flanges and bolts as stated in the Aircraft Maintenance
Manual.install the bolts to the forward flange of the fan stator
module at the fan hub frame. Use the
9C6014 personnel stand as necessary.
.move the 9C6030 and fan stator. by hand.
.
Fan Stator Bolt Removal:
.
. to adjust side clearance during installation. Use the 9C6014
personnel stand as necessary.
.remove the bolts from the aft flange of the fan stator
module at the fan hub frame. -115B
GE PROPRIETARY INFORMATION
.apply lubricant to the threads of the bolts.
.
. toward
the propulsor.apply either zinc chromate primer or epoxy primer to
the fan hub frame flanges. by hand.adjust the left 9C6030 side beam aft wheel handle
"down" until there is a gap between the Aft Adapter
Pad and the fan stator.
EFFECTIVITY
B777/GE90-110B.adjust the 9C6030 Side Frame "up" one full turn of
the handle.adjust the 9C6030 Side Frame wheel handles "up"
until the forward wheel make contact with the
ground and the Aft Adapter pad makes contact
with the fan stator
.
.

-115B
GE PROPRIETARY INFORMATION
71-00-05
Page 4-10
Sep 05
.
The stand is made up of three parts and is placed into the
fan stator module after the fan blades have been
removed.GE AIRCRAFT ENGINES
GE90
TRAINING MANUAL
9C6014 PERSONNEL STAND
The 9C6014 personnel stand allows for access to the fan
stator module forward flange bolts and acoustical panels.
When assembled. the 9C6014 personnel stand provide
steps for the mechanic to reach the acoustic panels and
upper bolts of the fan stator module forward bolt flange.
EFFECTIVITY
B777/GE90-110B.
Forklift tubes are positioned within the stand and usable
from front side of the stand.